"During rehearsal on Tuesday, it came to mind that I should see my throat doctor because something didn’t feel/sound right. I went in for a visit on Wednesday and a scope of my vocal cords revealed that the granuloma has grown back where it had mostly healed. This is bad news," John wrote, adding that he needs to go under the knife once again and will have to endure another "very long chemically-imposed period of silence."

"I’m pretty emotionally burnt out at the moment, but please know how hard I tried to resolve this and how disappointed I am that I can’t perform this record yet," the devastated singer adds. "I’m completely bummed, especially for all of you who started making plans to see a show."

"The only thing that stops me from devolving into a puddle of tears is knowing that it’s a long life, and the greatest gift in the world is being able to create music no matter what the circumstances," John adds. "So these are the new circumstances, and I’ll find a way to make it mean something. That’s all you can ever do."